Question about Rheem Paloma Tankless Water Heaters PTG-74PVN Tankless RTG-74PVN

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C4/13 error code on Paloma PH-20RIFSN water heater

We also have the c4/13 error code even after cleaning the air inlet and water filter. Is this also the ODS sensor that's the problem. Sometime it says code#5.

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Posted on Jan 02, 2017

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SOURCE: how to correct error code C-7 on my RTG-74PVN Rheem Pronto

I had the same problem and called the manufacturer. The error code C-8 was followed by the number 76. They told me to disconnect the thermostat/digital display from the main unit. This was fairly simple to do by removing the front panel. The unit works steady now without shutting down after a few minutes. The help desk told me that the main circuit board needs to be replaced for the unit to work with the display and that they would mail me one asap. At least we have hot water again.

Oakville, Ontario

Posted on May 24, 2009

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snap101
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SOURCE: Heater shuts down with C4-13 code

your not getting enough fresh air to it. where is it located? you need 1 square inch per 1000 btu's. it's having irregular combusion.

Posted on Aug 02, 2009

  • 3 Answers

SOURCE: Paloma PTG 74PV N1 Tankless Water Heater - stops heating

Most likely problem is the remote control not the main board. A safe temporary fix is to unplug the heater from the 110 volt outlet, remove the two low voltage wires from the remote control and use a small wire nut to connect the two conductors together. Plug the heater back into the 110 outlet and the heater should work just fine. The default water temperature is about 118 degrees at the heater. Replace the remote control ASAP.

Posted on Aug 03, 2009

mrhotandcold
  • 248 Answers

SOURCE: water heater shuts down and flashes c4 76

overheat stat or fan

Posted on Oct 15, 2009

  • 1 Answer

SOURCE: Tankless water heater (Paloma) Has C2 11 error

I had this problem with the C2 11 error code. My unit is 1.5 years old. I called Paloma and they emailed me an 11 page document to clean the burners. I am not an HVAC but I got the feeling that's who the instructions were for. Very difficult but you can do it if you're handy. You basically take apart 1/2 the unit, be carfull not to lose any screws and label all the little brackets that come off. It took me 2-3 hours to get to the burners. I used a can of air (for keyboards-electronics) to blow on the burners and clear any build up. After putting it back together (carefull to make sure the 3 gas tubes make a seal when re-installed) the unit works. I did this today so I'm not sure the unit will still work in a week/month. I am dreading having to do this every year to keep the unit running.

Posted on Oct 21, 2009

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1 Answer

Eco 180dvp What is an error code 5? Thanks


Imperfect Combustion
Clean air inlet filter.
Clean combustion air fan.
Clean heat exchanger fins.
Check for adequate combustion air ventilation openings and clean if necessary.
Check vent system for partial blockage and correct as necessary.

Nov 02, 2013 | Rheem Paloma Tankless Water Heaters...

1 Answer

Code P1 appears in my Paloma gas water heater


Copy following link for troubleshoot resources Rheem/Paloma tankless:
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html
http://waterheatertimer.org/images/Rheem-service-valves.jpg
http://waterheatertimer.org/Crossover.html

Error P1 is not enough water flow.
Clean water filter located on cold water inlet at top of cold pipe when cold enters unit
Test single handle faucets for crossover
Check if faucet can fill 1 gallon can in 30 seconds.

Apr 15, 2013 | Water Heaters

1 Answer

I have a paloma tankles water heater model #ptg-42pvn i am getting an intermitent error code C4,12. what is the problem?


Copy following link for Rheem-Paloma tankless troubleshoot and error codes:
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html
http://waterheatertimer.org/How-to-install-gas-water-heater.html#install

If unit worked before: Maybe bad PC board. Maybe lack of required yearly maintenance.
Common error codes can be caused by not following maintenance protocol such as cleaning combustion parts, checking gas pressure, checking venting, and air intake, bleeding gas line etc.
Too bad Rheem-Paloma manuals do not show HOW to conduct this maintenance, leaving customer with many unknowns, and no way to oversee that maintenance performed by hired technician is complete, and matches recommended maintenance.
Sell unit on ebay, and install tank-type gas water heater.

Mar 20, 2013 | Rheem Paloma PTG-42PVN / RTG2-42PVN...

1 Answer

My unit is a paloma tankless model # PTG-74PVP its throwing error code C4 15 what does this mean? We believe its a flow problem because we hooked up an external pump, it starts out with full flow then...


Could be a restricted inlet pipe just as you suspected.
http://waterheatertimer.org/pdf/ErrorcodeTroubleshooting.pdf
error 15 is 'Boiling safety device'
"Check for closed water heater inlet valve or restrictions in cold water inlet pipe (must be fully open).
Check for clogged heat exchanger (scale buildup).
On commercial water heater, lower setpoint temperature below 180F at high altitude."

Open following links for Rheem tankless resources including Rheem chat and phone support:
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html
http://www.rheem.com/products/tankless_water_heaters/customer_support/

Jun 14, 2011 | Rheem Paloma PTG-74PVP / RTG-74PVP Liquid...

1 Answer

Error code 21 A1


This means the air intake cover problem.
21
Malfunction of Air Intake Filter Switch Ensure air filter door is properly seated. Ensure front panel is properly installed.
Error codes here: http://www.palomastore.com/paloma_error_codes.html

Mar 03, 2010 | Rheem Paloma Tankless Water Heaters...

1 Answer

My paloma tankless water heater shuts of but the display goes blank and does not show an error code.


check to make sure circuit breaker is big enough to handle your unit if not get correct size

Oct 07, 2009 | Rheem Paloma PH-28R IFSN / RTG-74PVN...

5 Answers

Tankless water heater (Paloma) Has C2 11 error


I had this problem with the C2 11 error code. My unit is 1.5 years old. I called Paloma and they emailed me an 11 page document to clean the burners. I am not an HVAC but I got the feeling that's who the instructions were for. Very difficult but you can do it if you're handy. You basically take apart 1/2 the unit, be carfull not to lose any screws and label all the little brackets that come off. It took me 2-3 hours to get to the burners. I used a can of air (for keyboards-electronics) to blow on the burners and clear any build up. After putting it back together (carefull to make sure the 3 gas tubes make a seal when re-installed) the unit works. I did this today so I'm not sure the unit will still work in a week/month. I am dreading having to do this every year to keep the unit running.

Sep 28, 2009 | Rheem Paloma PTG-74PVN / RTG-74PVN...

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